Ok, A little update on my part. Today mobo/ram/e2140 came in. Checked, it was SLA93 which is M0, ordered from newegg $70 with coupon

.
Swapped that with my dfi s939mobo/opteron146@2.2/ddr1 mem. Ran sysprep, installed drivers etc. After a bit of testing, upped to e2140 to 2.67 ghz 333FSB/1:1 memory (stock fan/no arctic silver, I'm super cheap

). Neo2FR p35 mobo (<$70 open box) 2x512 ddr800.
So far feels way faster in benches/games than my single core. I'm not going to push it higher until I find a reliable way of measuring temp, cuz I heard that speedfan/core temp underreports temp, right now idle at 35/26C* and everything works perfectly
Right now i'm running on x800xl. I will wait till 3850 (or 8800gt256, whichever first) drops below $150 and I'll grab that

I'll keep you guys updated
Quick Benchmark e2140
e2140@2.66 23-24sec super PI, 5740 3dmark o5
cs source test 10x7 all low except medium texture 4x AF filtering 154.5fps
cinebench r10 default (multi cpu) - 4865
@3.2
5654 cinebench
20s Superpi 1M
162.5 cs source
nuclear mc 8805
3dmark 05 not complete, I guess it got over 70 C with stock cooler, so system rebooted

(@1.45 volts I'll try lowering). Well, i'm going to 3.0 since 3.2 requires 1.45.
Seems 3.0 (375x8) offers best performance without being overheated. Maybe Core2 duo's Like 375 FSB.
@3.0 1.330 volt (now down to stock volts, 1.312)
Superpi 20s
Nuclear mc 8465
3Dm06 cpu score 2550 Hottest core Load - 66c, 33 idle.
Cinebench r10 - 5364 (multicore)